Picker-stick check for looms



(No Model.)

W. E. SARTWELL. PIGKBR STIGK CHECK FOR LOOMS.

No. 563,067. Patented June 30, 1896.

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WILLIAM E. SARTXVELL, OFTROY, VERMONT.

-PlCKER-ST|CK CHECK FOR LOOMS.

SPECIFICATION formingpart of Letters Patent No. 563,067, dated June 30,1896.

Application filed November 30, 1894. Serial No. 530,389. (No model.)

To all whom it may concern:

Be it known that I, XVI'LLLAM E. SARTWELL, of North Troy, in the countyof Orleans and State of Vermont, have invented a new and ImprovedPicker-Stick Check for Looms, of which the following is a full, clear,and exact description.

This invention is adapted for use in that class of looms in which theshuttle that carries the filling is thrown back and forth in the battenby so-called picker-sticks, located one at each end of said batten; andthe object of the invention is to provide a yielding stop to check thepicker-stick in its outward movement and to cushion the said stick andthus relieve the shock at the sudden stopping of theshuttle as it shootsthrough the shuttle-race and comes in contact with said stick; and afurther object of the invention is to provide a check which will beexceedingly simple, durable, and economic, and which will not exert adownward thrust on the picker-stick, but a tension in a horizontaldirection.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views.

Figure 1 is a side elevation of a portion of the batten or lathe of aloom, illustrating the picker-stick in side elevation and likewise thecheck. Fig. 2 is a vertical section taken on the line 2 2 of Fig. 1, andFig. 3 is a horizontal section taken practically on the line 3 3 of Fig.1.

In carrying out the invention, A represents a portion of the loom-frame,A the batten or lathe, and B the picker-stick, arranged to throw theshuttle in the usual or ordinary manner. At each side of the batten orlathe a plate 10 is secured in any suitable or approved manner, and eachof said plates is provided with a lug 11, and in the said lug a recess12 is produced, while adjacent to the lug 11 an oifset 13 is secured tothe plate, as is best shown in Fig. 1, and the face of the offsetsubstantially opposed to the lug 11 is preferably of a yielding orelastic material, such as leather or rubber, or the equivalent thereof.

A substantially U-shaped arm 14 has its members pivoted in the upperportion of the recesses 12 of the said lugs 11, the bottom or bowportion of the arms being a predetermined distance below the bottomportion of the lathe or batten, and upon the lower or bow portions ofthe arms 14 a stop plate or shield 15 is secured in any suitable orapproved manner, adapted to be engaged by the picker-stick B in itsoutward movement, and the face of the stop plate or shield which isengaged by the picker-stick B is made cylindrical or convexed, as islikewise best shown in the said Fig. 1.

A springgfi is located at each side of the batten or lathe A, and oneend of each spring is secured in any suitable or approved manher in oneof the lugs 11 of the base-plate 10, the spring being provided with oneor more coils above the top of the lug with which it is connected, andthe said springs are then carried downward to an engagement with theside members of the U-arm 14, the tendency of the spring being to carrythe stop-plate 15 in an inward direction, at which time the arm 14: willhave a downward and inward inclination.

In the operation of this device, when the shuttle strikes thepicker-stick, the pickerstick is forced outward or rearward, engagingwith the stop-plate 15, and as this plate has a conveXed surface it hasa rocking connection with the picker-stick, and therefore the plate willexert a lateral tension upon the picker-stick at all times and not thedownward tension which is found in most other checks for looms, andunder this construction the picker-stick will have less wear thanheretofore. Furthermore, when the pickerstick is carried outward thesprings 16 will be placed under tension, and as these springs are simplyengaged with the pivoted U -arm 14 their ends are free to slide on themembers of the arm 14, and they are not weakened to any appreciableextent whenacted upon by the stick, since none but torsional strain willcome upon the springs, and when the springs act to return thepicker-stick in an inward direction the moment that the U-arm 14 strikesthe check projections 13 on the base-plate 10 the springs will be freeto vibrate independently of the arm 14:, and therefore will come to restmore rapidly than if they were secured to the arm to vibrate therewith.Therefore it is obvious that even in both movements of the picker-stickthe springs 16 will not be in any manner injured, while they will act aseffectively as though the springs were connected directly with thestop-plate 15.

Having thus described my invention, I

cured to the horizontal or connecting portion' of the arm, and springs,each provided with a coil between its ends, the said springs having oneend secured to the rear portions of the said lugs and their free endsloosely engaging the members of the arms at about midway of theirlength, substantially as described.

2. The combination with a batten or lathe, and the picker-stick, of twoplates secured to opposite sides of the batten or lathe and eachprovided with a laterally-projecting and recessed lug, and an elongatedstop in front of the lug, said stops having yielding or elastic faces, aU-shaped arm having the ends of its members pivoted in the upper portionof the recesses of the lugs, a stop-plate having a convex face andsecured to the horizontal or connecting portion of the arm andprojecting above and below said connecting portion, and springs, eachprovided with a coil between its ends the said springs having one endsecured to the rear portions of the lugs of the plate and their freeends loosely engaging the members of the arms, substantially as hereinshown and described.

LAURA B. GLEMoNs, CHRISTINE LAW.

